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Submitted on: 28 October 1998.
Revised on: 28 December 1998.
Accepted on: 26 January 1999.
___________________Journal of Mining and Metallurgy Section B-Metallurgy
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Submitted on: 12 January 2002.
Revised on: 23 March 2002.
Accepted on: 08 April 2002.
___________________Journal of Mining and Metallurgy Section B-Metallurgy
Submitted on: 08 December 2011.
Revised on: 05 April 2012.
Accepted on: 23 April 2012.
___________________Journal of Mining and Metallurgy Section B-Metallurgy
Submitted on: 07 January 2018.
Revised on: 18 April 2018.
Accepted on: 07 June 2018.
___________________Journal of Mining and Metallurgy Section B-Metallurgy
Submitted on: 21 August 2022.
Revised on: 18 November 2022.
Accepted on: 02 January 2023.
___________________Journal of Mining and Metallurgy Section B-Metallurgy